number~ : Shows the current value of one of the signals. Use the
channel display selector to choose the monitored channel.

scope~ : Provides detailed oscilliscope-like disply of any one
signal. Use the channel display selector to choose the monitored channel.

spectroscope~ : Shows the harmonic content of any one signal. Use the
channel display selector to choose the monitored input channel.

Selecting a channel for display

The number~, levelmeter~, scope~ and
spectroscope~ objects will adapt to show all multichannel
signals, but will only display or foreground one channel
at a time. Use the channel display selector to bring one of
the channels into focus.

Click on one of the channel display selector indicators to switch
to the chosen channel.

The scope~ and levelmeter~ objects have an
inactivealpha attribute that controls the relative brightness of
unselected channels.